PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/25-01:12:00
G02     47.0           43.3                9.7 +/-    1.44      13.4 +/-    1.44  0.040 / 0.050
G05     93.9           68.8                9.6 +/-    0.55      10.2 +/-    0.55  0.040 / 0.040
G12     187.9          49.7               12.7 +/-    0.96      16.1 +/-    0.96  0.030 / 0.030
G25     268.4          58.1               10.5 +/-    0.97      12.1 +/-    0.97  0.030 / 0.030
G29     317.4          39.3                8.7 +/-    1.00      12.9 +/-    1.00  0.040 / 0.040